Noob aches and pains... elbows and arse...

To add to all of the good technical advices above, always check that your shoulders, neck and arms are relaxed and use your core strength it will help your back and upper body instead of using the wrong muscles. Also learn efficient breathing. And if you are into yoga it is amazing to rebalance your muscles and will make you a more efficient cyclist.
http://www.yogajournal.com/lifestyle/196

racist.